After the two"most interesting fictional characters" posts, I want also to present the sf-nal and fantasy universes that impressed me the most along the years. I will consider only *series universes* that have at least two books out with one noted exception. There will be thirteen categories with a juxtaposition of sf and fantasy choices for a total of 31 series including ties as well as a "classical" category at the end.

No repetition of universes in different categories and of course only favorites of mine are included. I linked to our latest reviews of series books whenever available, next to Wikipedia articles and finally to Amazon and you can explore further the series and their universes from there. I generally used the series name since it's usually the best known one rather than the name of the world/universe.

Thank you for your kind words; I would like to review some of the books mentioned here that we have no reviews of and while they have their big time fans are less well known generally, most notably Sean Russell's World Without End which is just wonderful, David Zindell's Neverness or Broken God, some Jack Vance (Araminta Station, Night Lamp, Alastor) and some DKM books like Long Run or Last Dancer.

Neverness is still one of my favorite SF universes. I wonder if Zindell's latest books (which, apparently, even though they are Fantasy, take place in the same universe - is that so, Liviu?) keep the same pace and quality.

I hated - and few books provoke that strong reaction - the Lord of Lies fantasy series from David Zindell; tried further books also to see if I like them better and they had the same copycat heroes from Requiem and all the worst fantasy cliches you can imagine.